Hydrogen-Bond Weakening through [pi] Systems: Resonance-Impaired Hydrogen Bonds (RIHB)

Redefining interactions: The concept of the resonance-impaired hydrogen bond (RIHB) as an interaction in which a conjugated π system strongly impairs the formation of a hydrogen bond (HB) is introduced. A typical HB involving charged species can have a formation energy of tens of kcalmol-1, whereas...

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Bibliographic Details
Published in:Chemistry : a European journal 2017-11, Vol.23 (65), p.16605
Main Authors: Guevara-Vela, José Manuel, Romero-Montalvo, Eduardo, delRio-Lima, Alejandra, MartinPendas, Ángel, Hernandez-Rodriguez, Marcos, RochaRinza, Tomás
Format: Article
Language:English
Subjects:
Bonding strength
Chemical bonds
Chemistry
Energy of formation
Hydrogen
Hydrogen bonding
Hydrogen bonds
Hydrogen storage
Quantum chemistry
Resonance
Topology
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Summary:Redefining interactions: The concept of the resonance-impaired hydrogen bond (RIHB) as an interaction in which a conjugated π system strongly impairs the formation of a hydrogen bond (HB) is introduced. A typical HB involving charged species can have a formation energy of tens of kcalmol-1, whereas the corresponding value for the examined RIHB is only 2.6kcalmol-1 (see figure). Quantum chemical topology tools are used to analyse the low formation energy of the studied RIHBs.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201703436